Dog bed



FIG. 1 is a perspective view of a dog bed showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a right side elevational view thereof, the left side being a mirror image;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof.

The broken lines shown on the handles on either side of the bed depict stitching that is environmental subject matter only and that forms no part of the claimed design. 

CLAIM The ornamental design for a dog bed, as shown. 